libnl-tiny/src/socket.c

72 	struct nl_sock *sk;
74 	sk = calloc(1, sizeof(*sk));
75 	if (!sk)
78 	sk->s_fd = -1;
79 	sk->s_cb = cb;
80 	sk->s_local.nl_family = AF_NETLINK;
81 	sk->s_peer.nl_family = AF_NETLINK;
82 	sk->s_seq_expect = sk->s_seq_next = time(0);
83 	sk->s_local.nl_pid = generate_local_port();
84 	if (sk->s_local.nl_pid == UINT_MAX) {
85 		nl_socket_free(sk);
89 	return sk;
127  * @arg sk		Netlink socket.
129 void nl_socket_free(struct nl_sock *sk)
131 	if (!sk)
134 	if (sk->s_fd >= 0)
135 		close(sk->s_fd);
137 	if (!(sk->s_flags & NL_OWN_PORT))
138 		release_local_port(sk->s_local.nl_pid);
140 	nl_cb_put(sk->s_cb);
141 	free(sk);
159  * @arg sk		Netlink socket.
168 void nl_socket_disable_seq_check(struct nl_sock *sk)
170 	nl_cb_set(sk->s_cb, NL_CB_SEQ_CHECK,
178  * @arg sk		Netlink socket.
184 void nl_socket_set_local_port(struct nl_sock *sk, uint32_t port)
188 		sk->s_flags &= ~NL_OWN_PORT;
190 		if (!(sk->s_flags & NL_OWN_PORT))
191 			release_local_port(sk->s_local.nl_pid);
192 		sk->s_flags |= NL_OWN_PORT;
195 	sk->s_local.nl_pid = port;
207  * @arg sk		Netlink socket
221 int nl_socket_add_memberships(struct nl_sock *sk, int group, ...)
226 	if (sk->s_fd == -1)
235 		err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP,
250  * @arg sk		Netlink socket
260 int nl_socket_drop_memberships(struct nl_sock *sk, int group, ...)
265 	if (sk->s_fd == -1)
274 		err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP,
292  * @arg sk		Netlink socket.
296 int nl_socket_set_nonblocking(struct nl_sock *sk)
298 	if (sk->s_fd == -1)
301 	if (fcntl(sk->s_fd, F_SETFL, O_NONBLOCK) < 0)
316  * @arg sk		Netlink socket.
327 int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf)
337 	if (sk->s_fd == -1)
340 	err = setsockopt(sk->s_fd, SOL_SOCKET, SO_SNDBUF,
345 	err = setsockopt(sk->s_fd, SOL_SOCKET, SO_RCVBUF,
350 	sk->s_flags |= NL_SOCK_BUFSIZE_SET;
357  * @arg sk		Netlink socket.
362 int nl_socket_set_passcred(struct nl_sock *sk, int state)
366 	if (sk->s_fd == -1)
369 	err = setsockopt(sk->s_fd, SOL_SOCKET, SO_PASSCRED,
375 		sk->s_flags |= NL_SOCK_PASSCRED;
377 		sk->s_flags &= ~NL_SOCK_PASSCRED;
384  * @arg sk		Netlink socket.
389 int nl_socket_recv_pktinfo(struct nl_sock *sk, int state)
393 	if (sk->s_fd == -1)
396 	err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_PKTINFO,